How can I access my phone if the screen is broke?

You could put the motherboard into another phone and extract the data and remove it. The only cost will be time and possibly a 80 cent adhesive strip to reseal the battery cover. Or you can put a new screen on it. You can buy a new screen for around 200 to 250 dollars with frame. And I would buy it with frame. You might also get a new battery cover because if you aren't good at taking these off they are easy to break. But the cover is less than 5 dollars. All you will need is a heat gun or a hair dryer a pair of tweezers, a plastic spugger and a mini Phillips screwdriver. Ifixit has videos and there are a lot more on YouTube. You can either keep the phone or sell it and buy something else.